Yes it’s deliberately worded to be vague it could really mean either with no source, I did some research and most of what I found was multiple books are being published by people, with that same 1/10 being repeated, didn’t look into publishing rates or anything yet though.
That's '1 in 10 Icelanders will write and publish at least one novel at some point in their life', not 'one book written for every 10 Icelanders'.
It's a stat you'll see floating around the internet, though I haven't seen the ultimate source.
Yes it’s deliberately worded to be vague it could really mean either with no source, I did some research and most of what I found was multiple books are being published by people, with that same 1/10 being repeated, didn’t look into publishing rates or anything yet though.